Flx Posted July 3, 2021 Share Posted July 3, 2021 (edited) Hi I am currently preparing a bunch of associated bones from Morisson Formation. The fossils have been found near the town Shell. The finder identified the bones as Camptosaurus and I agree with the ID. The jacket contains two femuri, ribs, parts of hip bones as well as a phalanx. It seems that all bones belong to the same animal. However, I am not convinced regarding the phalanx. I think it may not belong to this individual (or Camptosaurus). The campto digits I saw so far looked quite a bit different. If it is not Campto what is it then? Below please find some pictures of the jacked and one partially prepared femur and the phalanx. Size femur: 48cm / 19inch Size phalanx: 10cm / 4inch Edited July 3, 2021 by Flx 1 2 Link to comment Share on other sites More sharing options...
Troodon Posted July 3, 2021 Share Posted July 3, 2021 The pedal phalanx is definitely not Camptosaurus, they are short and more box shaped. Looks like its from an indeterminate theropod phalanx 1 possibly digit II 1 Link to comment Share on other sites More sharing options...
Flx Posted July 4, 2021 Author Share Posted July 4, 2021 20 hours ago, Troodon said: The pedal phalanx is definitely not Camptosaurus, they are short and more box shaped. Looks like its from an indeterminate theropod phalanx 1 possibly digit II Thank you for confirming that the phalanx is not Camptosaurus. I will look at theropod digits to see if I can narrow it down some more (most likely not possible since I cannot find a lot of illustrations and my phalanx is a bit beaten up). Link to comment Share on other sites More sharing options...
Troodon Posted July 4, 2021 Share Posted July 4, 2021 Not much is published on feet outside of Allosaurus so reference material is hard to find. This bone is not from one of the large theropods. Some affinities to Tanycolagreus so thats one candidate. Check out Digit II Phalanx 1. But having said that they are all petty similar. 2 Link to comment Share on other sites More sharing options...
Flx Posted August 30, 2021 Author Share Posted August 30, 2021 I continued working on this jacket recently and I extraced a rib and an partial ischium. Both pieces were beaten up quite a bit and needed a lot of crack fill. 1 Link to comment Share on other sites More sharing options...
Flx Posted August 30, 2021 Author Share Posted August 30, 2021 I found a claw in the jacket that has been completely covered with matrix. What I nice and unexpected surprise. It probably belongs to the camptosaurus as well. However, I am not a claw expert... Below please find some pictures. The length is about 5cm. 1 Link to comment Share on other sites More sharing options...
Troodon Posted August 30, 2021 Share Posted August 30, 2021 Yep it looks like a Camptosaurus ungual. Its very nice. Ischium also looks like one. Very nice 2 Link to comment Share on other sites More sharing options...
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